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ECU control unit Porsche 993 up to 1995 99361812306 - 993618123GX
993618123GX
Vehicle Group
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Information
ECU control unit Porsche 993 cars upto 1995
Fits:
Porsche 993 1996-1998
Please note: this parts is sold on an exchange basis, A surcharge will be held and then refunded when the old one is returned.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
993618123GX
99361812301
99361812302
99361812303
99361812304
99361812305
99361812306
993618123GX
993618123GU
The product you are viewing cross references to these numbers
PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.
Price: £4,972.71
+ £4,379.46 packing surcharge
Orderable
Related products
Vehicle Group
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Information
Seat position control unit. For Cars with:
driver memory package (I3L4) and
12-way electrical adjustment for both front seats + memory (I3PN)
Fits:
Porsche 955 Cayenne 2003-06
Porsche 957 Cayenne 2007-10
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95561874000
The product you are viewing cross references to these numbers
driver memory package (I3L4) and
12-way electrical adjustment for both front seats + memory (I3PN)
Fits:
Porsche 955 Cayenne 2003-06
Porsche 957 Cayenne 2007-10
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95561874000
95561874000
The product you are viewing cross references to these numbers
Price: £494.69
Orderable
Vehicle Group
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Information
Control unit diff lock longitudinal.
Fits:
Porsche 955 Cayenne - 2005 to 2006
For cars with Option Code
G0R - Tiptronic S
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95561802311
The product you are viewing cross references to these numbers
Fits:
Porsche 955 Cayenne - 2005 to 2006
For cars with Option Code
G0R - Tiptronic S
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95561802311
95561802311
The product you are viewing cross references to these numbers
Price: £639.31
Orderable
Vehicle Group
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
Information
Tiptronic Control Unit.
Restore proper centre differential/transfer-case lock control in your Porsche Cayenne 955 chassis, 2003-2004. This ECU module governs the longitudinal lock mechanism of the drive system, ensuring correct power distribution front to rear, correct 4WD behaviour and stable traction. Ideal for replacing a failed or malfunctioning unit, it enables your 4WD system to perform reliably.
Fits:
G0R - Tiptronic S
Diagram Ref No 8
What This Product Does:
Symptoms Of Failure Or Need For Replacement:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95561802305
The product you are viewing cross references to these numbers
Restore proper centre differential/transfer-case lock control in your Porsche Cayenne 955 chassis, 2003-2004. This ECU module governs the longitudinal lock mechanism of the drive system, ensuring correct power distribution front to rear, correct 4WD behaviour and stable traction. Ideal for replacing a failed or malfunctioning unit, it enables your 4WD system to perform reliably.
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-04
- Porsche 955 Cayenne S 4.5L V8 2003-04
- Porsche 955 Cayenne Turbo 4.5L 2003-04
G0R - Tiptronic S
Diagram Ref No 8
What This Product Does:
- In 4WD/all-wheel-drive systems the “drive longitudinal lock” refers to locking mechanisms of the centre differential or transfer case — this ensures power is correctly distributed between front and rear axles.
- This ECU monitors and controls that locking system: it takes inputs (wheel speeds, differential states, driver commands) and commands the actuator (solenoids, clutches) in the transfer case or centre diff to engage or release the lock.
- Proper function ensures that the vehicle’s 4WD system behaves correctly (engaging or disengaging locks when required), which impacts traction, stability, driveability and sometimes road regulations (e.g., snow/ice mode).
- If this unit fails, the locking system can get stuck open or closed, produce fault codes, and affect driving behaviour (especially in low-traction or off-road situations).
Symptoms Of Failure Or Need For Replacement:
- A fault code related to the centre differential, transfer case, or “longitudinal lock” is present in the diagnostics.
- Loss of 4WD function or “lock” function — e.g., the vehicle stays in 2WD when it should lock, or it stays locked when it shouldn’t.
- Illumination of warning lamps related to drivetrain/4WD/traction.
- Unusual noises from the transfer case / centre diff (clutch slipping, grinding) that might be triggered by improper lock control.
- Intermittent behaviour (sometimes works, sometimes doesn’t) which can indicate ECU logic/actuator control failure rather than a purely mechanical fault.
Why Replacement Matters:
- Because the control unit is central to drivetrain behaviour, a fault here can drastically degrade vehicle performance, safety (traction/stability) and drivability.
- For a Porsche Cayenne early model (955), these units are becoming harder to source or may be superseded — replacing a failing unit proactively protects the vehicle.
- Restoring the correct function of the 4WD/centre differential lock restores the vehicle’s intended performance envelope, especially under load, off-road or in low-traction conditions.
- From a maintenance/resale perspective: a vehicle with a properly functioning transfer-case lock system is more desirable; faults here reduce value.
- Lastly, diagnosing and replacing the ECU early may prevent secondary damage (mechanical wear from improperly controlled locks/clutches).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95561802305
95561802305
95561802300
95561802301
95561802302
95561802303
95561802304
The product you are viewing cross references to these numbers
Price: £540.95
In stock